Lipid and nitrous oxide combination as adjuvant for the...

A - Human Necessities – 61 – K

Patent

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A61K 39/39 (2006.01)

Patent

CA 2596920

The invention provides for a method of enhancing immunological responses to an antigen in a vaccine formulation, and for a vaccine formulation that provides for an enhanced immunological response to an antigen. In the method and formulation the antigen is administered with an adjuvant which adjuvant comprises a solution of nitrous oxide gas in a pharmaceutically acceptable carrier solvent for the gas and which adjuvant includes at least one fatty acid or ester or other suitable derivative thereof selected from the group consisting of oleic acid, linoleic acid, alpha-linolenic acid, gamma- linolenic acid, arachidonic acid, eicosapentaenoic acid [C20: 5.omega.3], decosahexaenoic acid [C22: 6.omega.3], ricinoleic acid and derivatives thereof selected from the group consisting of the Cl to C6 alkyl esters thereof, the glycerol-polyethylene glycol esters thereof and the reaction product of hydrogenated natural oils composed largely of ricinoleic acid based oils, such as castor oil with ethylene oxide.

L'invention porte sur un procédé permettant d'améliorer les réponses immunologiques à un antigène dans une formulation de vaccin, et sur une formulation qui fournit une réponse immunologique améliorée à un antigène. Selon ce procédé et cette formulation, l'antigène est administré avec un adjuvant qui contient une solution de gaz d'oxyde nitreux dans un solvant de support pharmaceutiquement acceptable pour le gaz, cet adjuvant contenant aussi au moins un acide gras, un ester ou un autre dérivé convenable de ceux-ci choisis dans le groupe acide oléique, acide linoléique, acide alpha-linolénique, acide gamma-linolénique, acide arachidonique, acide eicosapentaenoique [C20: 5?3], acide decosahexaenoique [C22: 6?3], acide ricinoleique et des dérivés de ceux-ci choisi dans le groupe esters d'alkyle Cl à C6, esters de glycerol-polyethylene glycol et le produit de réaction des huiles naturelles hydrogénées composées essentiellement d'huiles à base d'acide ricinoleique, telle l'huile de ricin avec de l'oxyde d'éthylène.

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